CN102024929B - Wire arrangement body, busbar module and power-supply unit - Google Patents

Abstract

The present invention relates to a wiring body, comprising: a box-shaped wiring groove part having a bottom wall part and two sidewall parts; a cover part rotatably connected to the wiring groove part through a hinge part and cover the wiring groove part, so that the groove opening of the wiring groove part is sealed; The other side wall portion of the groove portion engages. The wiring body is arranged such that the center position of the hinge and the center position of the joint are aligned parallel to the width direction of the wiring body.

Description

Wiring body, busbar module and power supply equipment

technical field

The present invention relates to a power supply device used in hybrid vehicles, electric vehicles, etc., a bus bar module constituting the power supply device, and a wiring body constituting the bus bar module.

Background technique

For example, the power supply apparatus shown in JP-A-2009-43637 (WO 2009/022521A1) is installed in various vehicles such as an electric car running with an electric motor, a hybrid car running with both an engine and a motor, as a power source for the motor. The power supply equipment includes: a storage battery assembly having a plurality of storage batteries, in which a positive electrode is provided on one end and a negative electrode is provided on the other end, and the positive electrodes and the negative electrodes are alternately arranged adjacent to each other; and a bus bar module, the bus bar module Overlaid on the surface of the battery assembly on which the electrodes are provided.

Examples of busbar modules used in power supply equipment are shown in FIGS. 7 to 9C . The busbar module 101 shown in each accompanying drawing includes: a plurality of busbars 103, connected between the electrodes of the adjacent batteries of the battery assembly not shown in the figure, so as to connect a plurality of batteries in series; a terminal 104 overlapping in each bus bar 103 and simultaneously connected to an electrode of each storage battery, so as to be used for detecting the voltage of the storage battery; a plurality of electric wires 105 joined (connected) in each terminal 104; and a plate 106, As a wiring body accommodating a plurality of bus bars 103 , a plurality of terminals 104 and a plurality of electric wires 105 . Furthermore, in FIGS. 7 and 8 , the plurality of electric wires 105 are omitted. Also, arrow X in FIGS. 7 and 8 indicates the arrangement direction of the plurality of storage batteries.

The board 106 includes a plurality of first accommodation portions 160 , a plurality of second accommodation portions 164 as wiring groove portions, a plurality of third accommodation portions 168 , and a plurality of cover portions 167 .

The first accommodating portion 160 is formed substantially in a box shape including a bottom wall portion having a rectangular shape and an outer peripheral wall provided vertically from the outer peripheral edge of the bottom wall portion so that the bus bars 103 and the terminals 104 are accommodated in the first accommodating portion 160 . . In addition, the plurality of first housing portions 160 are arranged in a row such that their longitudinal direction advances along the direction of arrangement of the plurality of storage batteries (direction of arrow X). Also, adjacent first receiving parts 160 are connected to each other.

The second receiving portion 164 is formed in a box shape (also referred to as a groove shape) having a bottom wall portion 165 and two side wall portions 166 and 166 , and accommodates a plurality of electric wires 105 therein. The plurality of second housing portions 164 are adjacent to each other and arranged in a row such that the longitudinal direction of the plurality of second housing portions 164 advances along the arrangement direction (arrow X direction). A row including the plurality of second accommodation portions 164 is arranged in parallel with a row including the plurality of first accommodation portions 160 with a gap. Also, the plurality of first storage portions 160 and the plurality of second storage portions 164 communicate through a plurality of third storage portions 168 formed in a box shape.

The cover portion 167 is formed in a rectangular shape and caps the second accommodating portion 164 so as to close the slot opening 198 of the second accommodating portion 164 . One end portion among two edge portions (long side portions) of the cover portion 167 facing each other in the width direction (arrow Y direction orthogonal to the longitudinal direction (arrow X direction)) is continuously provided by a first hinge 191 In a sidewall portion 166 of the second receiving portion 164 . The cover part 167 is provided in the second accommodation part 164 to be able to be opened/closed about the first hinge 191 as a rotation center. When the cover portion 167 covers (in other words, closes) the second receiving portion 164 , the first hinge 191 is bent.

Also, a locking pawl 194 engaged with a pawl accommodating portion 193 mounted on an outer surface of the other side wall portion 166 of the second accommodating portion 164 is provided in the other side edge portion of the cover portion 167 . The locking pawl 194 is engaged in the pawl accommodating portion 193 so that the cover portion 167 maintains a state where the second accommodating portion 164 is covered (in other words, closed) by the cover portion 167 .

Also, a plurality of notch portions 195 having a substantially rectangular shape are provided in the other side edge portion of some of the cover portions 167 in order to take out the electric wires 105 arranged in the second accommodating portion 164 . Normally, the electric wire 105 is taken out from the end opening 199 of the second housing portion arranged at the end of the plurality of second housing portions 164 arranged in a row, however, for example, at the arrangement position of a power supply device provided in an automobile In the case where the electric wire 105 is taken out from the second accommodating portion 164 arranged near the middle, so that this is a case where the electric wire 105 can be easily arranged in a car or the like, for this reason, the notch portion 195 is provided.

The wire drawing piece 196 is continuously provided at the bottom end of the notch portion 195 (in other words, the edge portion facing the opening of the notch portion 195 ) through the second hinge 192 . The electric wire drawing piece 196 is rotatably provided in the cover portion 167 about the second hinge 192 as the center of rotation. The plurality of electric wires 105 taken out from the second accommodating portion 164 through the notch portion 195 is connected in the electric wire drawing piece 196 by a band 197 as a restraint. Thus, the electric wire drawing piece 196 supports the plurality of electric wires 105 in a predetermined direction (the direction from the rear side to the front side in FIG. 8 ).

Thus, in the bus bar module 101 described above, the plurality of electric wires 105 are accommodated and arranged in the second accommodation portion 164 in which the groove opening 198 is sealed by the cover portion 167, and thus the plurality of electric wires 105 can be protected from contact with other members. Contact or protection from external shocks can prevent the cutting and shortening of the plurality of electric wires 105 .

However, in the bus bar module 101 (ie, the board 106 ), the center position P of the first hinge 191 and the center position Q of the locking pawl 194 are arranged to deviate from each other in the X direction, so that the cover part 167 covers the second In the case of the second accommodating portion 164, generally, a plurality of electric wires 105 are accommodated in the second accommodating portion 164 as shown in FIG. 9A. However, the bent first hinge 191 returns to the original shape (in other words, the lid portion 167 is opened), and there occurs a tendency to rotate the lid portion 167 in the width direction from the center position P of the first hinge 191 counterclockwise in the drawing. The rotational force F1 (in other words, the force to turn the lid portion 167 upward about the first hinge 191 as the center of rotation), so there is the other side edge portion ( The edge portion of the other side wall portion) floats, and the cover portion 167 is opened. Thus, since the cover portion 167 is opened as shown in FIG. 9B, the electric wire 105 is caught between the second accommodating portion 164 and the cover portion 167 (or the engagement of the electric wire), or the electric wire 105 is released from the second accommodating portion as shown in FIG. 9C. 164 is detached, so there is a problem that the multiple wires 105 are not protected.

Contents of the invention

Therefore, the present invention has paid attention to the above-mentioned problems, and an object of the present invention is to provide a wiring body, a bus bar module, and a power supply device in which the wiring groove can be sealed even when the bent hinge returns to the original shape. The cover of the part does not open.

In order to achieve this object, a wiring body is provided, including: a box-shaped wiring groove portion having a bottom wall portion and two side wall portions; a cover portion rotatably connected to the wiring body through a hinge. one side wall portion of the wiring groove portion and covers the wiring groove portion so as to seal the groove opening of the wiring groove portion; and an engaging portion such that when the cover portion covers the wiring The cover portion is engaged with the other side wall portion of the wiring groove portion when the wiring body is arranged such that the center position of the hinge and the center position of the engaging portion are aligned with each other. The width directions of the wiring bodies are parallel.

A busbar module may be provided, including: a plurality of busbars connecting batteries of a battery assembly having a plurality of batteries; a plurality of wires passing through the plurality of busbars connected to each battery; and a wiring body as defined above housing said plurality of electric wires.

There may be provided a power supply device comprising: a battery assembly having a plurality of batteries; and a busbar module as defined above, which is connected to the battery assembly in a stacked manner and connects the batteries to each other.

The wiring body may be constructed such that the engaging portion includes a pawl accommodating portion provided in an outer surface of the other side wall portion of the wiring groove portion, and a pawl accommodating portion to be engaged with the pawl accommodating portion provided on Locking detents in the edge portion of the cover.

According to the above configuration, in the wiring body, the center position of the hinge that continuously makes contact with the cover in one side wall portion of the wiring groove portion and the joint that engages the cover and the other side wall of the wiring groove portion The direction in which the center position of the part is aligned is set to be parallel to the width direction of the wiring groove part, so that in the case where the cover part covers the wiring groove part, even when the bent hinge returns to the original shape (that is, the cover part is opened), and when an upward rotational force applied to the cover part is generated from the center position of the hinge in the width direction around the hinge as the center of rotation, the joint part also faces the cover part in the width direction of the cover part. The other side edge portion at the center position of the hinge is engaged, and thus it is possible to prevent the cover from being twisted and a part of the cover from floating, thereby preventing the cover from being opened.

Description of drawings

FIG. 1 is a perspective view showing a power supply device according to an embodiment of the present invention;

Fig. 2 is a top view showing a busbar module set in the power supply device of Fig. 1;

Fig. 3 is a partial enlarged view showing the busbar module of Fig. 2;

FIG. 4 is a perspective view showing the second accommodation portion before being covered by the cover portion when the busbar module of FIG. 2 is assembled;

Fig. 5 is a perspective view showing that when the busbar module of Fig. 2 is assembled, the second accommodation part is covered by the cover part;

Fig. 6 is a sectional view taken along line B-B of Fig. 5;

Figure 7 is a top view showing a busbar module known in the prior art;

Fig. 8 is a plan view showing that in the busbar module of Fig. 7, the second accommodation part is covered by the cover part; and

9A to 9C are cross-sectional views taken along line A-A of FIG. 8 , wherein FIG. 9A shows a state in which a plurality of electric wires are housed in the second accommodating portion, and FIG. 9B shows that the electric wires are stuck between the second accommodating portion and the cover portion. The state in between, and FIG. 9C shows the state in which the electric wire is detached from the second accommodating portion.

Detailed ways

An embodiment of a power supply apparatus according to the present invention is described with reference to FIGS. 1 to 6 . Also, for convenience of description, an arrow X, an arrow Y, and an arrow Z are used to indicate the arrangement direction of each member in each drawing. Arrow X, arrow Y, and arrow Z are orthogonal to each other.

The power supply device 10 in FIG. 1 includes a battery assembly 2 and a bus bar module 1 stacked and connected to the battery assembly 2 . The power supply apparatus 10 is mounted on an electric vehicle that runs with a battery motor or a hybrid vehicle that runs with an engine and an electric motor together and supplies electric power to the electric motor.

The battery assembly 2 is constructed of a plurality of batteries 20 arranged in a row in one direction (arrow X direction in FIG. 1 ) and fixed to each other. Each battery 20 includes a battery body 21 in the shape of a rectangular parallelepiped, and a pair of electrodes 22 and 23 mounted on the battery body 21 and protruding from one end and the other end of the surface of the battery body 21 , respectively. One electrode 22 of the pair of electrodes 22 and 23 is a positive electrode 22 , and the other electrode 23 is a negative electrode 23 . The pair of electrodes 22 and 23 are respectively formed of a conductive metal in a cylindrical shape. Each storage battery 20 is arranged such that: in the storage battery main body 21, the surface on which the pair of electrodes 22 and 23 are mounted is directed in the same direction (ie, the upward direction in FIG. 1 ), and the storage battery main body of the adjacent storage battery 20 21 are in contact with each other, and the positive pole 22 of one storage battery 20 and the negative pole 23 of another storage battery 20 adjacent to the one storage battery 20 are alternately arranged adjacent to each other (in other words, along the arrow X direction, the positive pole 22, the negative pole 23, the positive pole 22, negative electrode 23, ... in sequence).

The bus bar module 1 is connected in series to a plurality of batteries 20 . As shown in FIGS. 2 and 3 , the bus bar module 1 includes a plurality of bus bars 3 , a plurality of terminals 4 , a plurality of electric wires 5 and a board 6 as a plurality of wiring bodies.

The bus bar 3 is connected to positive electrodes 22 and negative electrodes 23 of the batteries 20 of the battery assembly 2 adjacent to each other so as to connect the batteries 20 in series. The bus bar 3 is obtained by press working in a conductive metal plate, and a pair of holes 3a through which the positive electrode 22 and the negative electrode 23 of the storage battery 20 adjacent to each other pass are provided in the substantially rectangular metal plate. The pair of holes 3 a is positioned along the longitudinal direction of the bus bar 3 with the same interval as the mutually adjacent positive and negative electrodes 22 and 23 of the storage battery 20 . Moreover, the bus bar 3 is screwed together with the positive electrode 22 and the negative electrode 23 passing through the hole 3a by using a nut (not shown in the figure), so that the bus bar 3 is connected (fixed) to the storage battery 20 and electrically connected to the battery 20. positive electrode 22 and negative electrode 23 .

The terminals 4 are arranged overlappingly on the corresponding bus bars 3 so as to be connected to the positive electrode 22 and the negative electrode 23 of the storage battery 20 adjacent to each other via the bus bars 3 . The terminal 4 is obtained by press working or the like in a conductive metal plate, and includes a bus bar connection portion 41 and an electric wire joint portion 42 .

The bus bar connection portion 41 is overlappingly connected and electrically connected to the bus bar 3 , and is formed in a substantially rectangular shape, and a hole 41 a is provided at a central portion of the bus bar connection portion 41 . The length of each side of the bus bar connecting portion 41 is approximately equal to or slightly smaller than the length of the short side of the bus bar 3 . The holes 41 a overlap on one side of the pair of holes 3 a of the bus bar 3 so that the positive electrode 22 and the negative electrode 23 of the storage battery 20 pass through. In a state where the bus bar connecting portion 41 overlaps the bus bar 3 , the bus bar connecting portion 41 is connected to the battery 20 by a nut.

The wire joint portion 42 is a substantially rectangular plate-like piece connected in parallel to one side of the bus bar connection portion 41 . A pair of wire crimping pieces 43 that fix the coated portion of the one end 5A of the wire 5 that is coated with the electrically insulating coating is provided on a front end portion of the wire joint portion 42 as described below. A pair of pressing pieces 44 are provided in a central portion of the electric wire joint portion 42 in which the exposed core wire is connected under pressure to be electrically connected to the core wire in the one end 5A of the electric wire as described below. The hole 41a, the pair of clamping pieces 43, and the pair of pressing pieces 44 are linearly arranged in a row.

One end 5A of the electric wire 5 is connected to the terminal 4 through a pair of wire crimping pieces 43 and a pair of pressing pieces 44 of the wire joint portion 42 . In other words, the electric wire 5 is electrically connected to the terminal 4 to be connected to the positive pole 22 and the negative pole 23 of each storage battery 20 through the bus bar 3 .

Furthermore, the terminal 4 is connected to a voltage detection circuit provided to an ECU (Electronic Control Unit), not shown in the figure, via an electric wire 5 connected to the terminal 4 . Thus, the ECU detects the amount of power remaining in each storage battery 20, the state of charge/discharge of each storage battery 20, and the like. In other words, terminal 4 functions as a voltage detection terminal for detecting voltage based on the charge difference (voltage) of a pair of electrodes 22 and 23 in each storage battery 20 detected by the voltage detection circuit.

The electric wire 5 is a known covered electric wire having a conductive core wire and an insulating coating portion covering the core wire. At one end 5A of the electric wire 5, the insulating coating of the electric wire 5 is peeled off so that the core wire is exposed. One end 5A of the electric wire 5 is electrically connected to the terminal 4 , and the other end 5B of the electric wire 5 is connected to a voltage detection circuit included in the ECU, not shown in the figure, and the like.

The board 6 has, for example, a plurality of first accommodation portions 60 integrally formed with each other using synthetic resin, a second accommodation portion 64 as a plurality of wiring groove portions, a plurality of third accommodation portions 68, a plurality of cover portions 67, and a plurality of A wire extraction piece 96.

The first accommodating portion 60 includes a bottom wall portion 61 having the same substantially rectangular plate shape as the bus bar 3 and an outer peripheral wall portion 62 extending from the bottom wall portion 61 to form a substantially box shape. The edges are arranged vertically. A pair of holes (not shown) overlapping the pair of holes 3 a of the bus bar 3 are provided in the bottom wall portion 61 . The bus bars 3 and the terminals 4 are sequentially overlapped in the inner surface of the bottom wall portion 61 (in other words, the surface surrounded by the outer peripheral wall 62 ). That is, each individual bus bar 3 and terminal 4 is accommodated in the interior of the first accommodating portion 60 . Thus, the positive electrode 22 or the negative electrode 23 of each secondary battery 20 passes through the pair of holes of the bottom wall portion 61 and the hole 3 a of the bus bar 3 in sequence, and either one of the positive electrode 22 and the negative electrode 23 passes through the hole 4 a of the terminal 4 . Also, the longitudinal direction of the plurality of first accommodation portions 60 is aligned in a row along the arrangement direction of the plurality of storage batteries 20 (direction of arrow X), so that the plurality of first accommodation portions 60 are connected to each other by the connection piece 63 .

The connecting piece 63 is a semicircular cylindrical shape having a C-shaped cross-section and is formed to be elastically deformable, and a pair of both end portions of the connecting piece 63 are connected facing the opposing outer peripheral wall portions 62 in the first accommodating portion 60, The facing outer peripheral wall portions 62 are made to abut each other. The connecting piece 63 moves away from or approaches the adjacent first receiving portion 60 by elastic deformation, and absorbs a shape error of each storage battery 20, board 6, etc., so that the assembly of the power supply 10 can be improved.

The second accommodating portion 64 is formed in a groove shape (box shape) having a U-shaped cross section, and includes a bottom wall portion 65 having a long rectangular plate shape and vertically disposed from both ends facing the bottom wall portion 65 in the width direction. A pair of side wall portions 66 and 66, and a plurality of electric wires 5 are housed inside the second housing portion 64. The plurality of second accommodating portions 64 are arranged in a row, while the longitudinal direction of the plurality of second accommodating portions 64 advances along the arrow X direction. A row including the plurality of second accommodating portions 64 is arranged parallel to a row including the plurality of first accommodating portions 60 in a direction orthogonal to the arrow X direction (in the arrow Y direction) and the two There are gaps between rows.

The third accommodating portion 68 is formed in a box shape and is disposed in the arrow Y direction so as to communicate with the first accommodating portion 60 and the second accommodating portion 64 . The third accommodating portion 68 includes a bottom wall portion 69 and a pair of connecting wall portions 70 , wherein the bottom wall portion 69 connects the bottom wall portion 61 of the first accommodating portion 60 facing each other with the bottom wall portion 65 of the second accommodating portion 64 , and the pair of connecting wall portions 70 connects the outer peripheral wall portion 62 of the first accommodating portion 60 and the side wall portion 66 of the second accommodating portion 64 facing each other. The wire joint portion 42 of the terminal 4 and the one end 5A of the wire 5 are arranged in the third accommodation portion 68 .

Also, as shown in FIG. 3 , the other end 5B of the electric wire 5 whose one end 5A is accommodated in the third accommodating portion 68 is bent approximately at 90° and is accommodated in the second accommodating portion 64 . Also, a pair of upper wall portions 71 protruding to be close to each other is provided on upper end portions of the pair of connecting wall portions 70 separated from the bottom wall portion 69 . The third accommodating portion 68 holds the electric wire 5 and the wire engaging portion 42 of the terminal 4 between the pair of upper wall portions 71 and the lower wall portion 69 so as to prevent the electric wire 5 from coming out of the third accommodating portion 68 .

The cover portion 67 is formed in a rectangular shape and covers the second accommodating portion 64 so as to seal the slot opening 98 of the second accommodating portion 64 . The width of the cover part 67 is slightly larger than the width of the slot opening 98 of the second receiving part 64 . The cover portion 67 is configured such that a part of the edge portion of one of two edge portions (long side portions) facing in the width direction (short side direction) is continuously provided on the side through the first hinge 91 . An upper end of one side wall portion 66 of the second receiving portion 64 is away from the bottom wall 65 . In other words, the rotation axis of the first hinge 91 is provided in the arrow X direction, and the cover portion 67 that can be opened/closed around this first hinge 91 as the rotation center is provided in the second accommodation portion 64 . The first hinge may simply refer to the hinge.

A locking pawl 94 is provided in an edge portion on the other side of the cover portion 67 , wherein the locking pawl 94 engages with a pawl accommodating portion 93 provided in an outer surface of the other side wall portion 66 of the second accommodating portion 64 middle. The locking pawl 94 is engaged in the pawl accommodating portion 93 , and thus this maintains the state (ie, closed state) in which the cover portion 67 covers the second accommodating portion 64 . The locking pawl 94 is disposed to face the first hinge 91 in the width direction. In other words, the direction in which the center position P of the first hinge 91 in the arrow X direction is aligned with the center position Q of the locking pawl 94 in the arrow X direction is set to be aligned with the width direction of the cover portion 76 (in other words, the direction of the second accommodation portion). width direction or arrow Y direction) parallel (including substantially parallel). The pawl receiving portion 93 and the locking pawl 94 may be referred to as engagement portions.

The pawl accommodating portion 93 is provided at the outer surface near the upper end of the other side wall portion 66 of the second accommodating portion 64 (the surface facing the pawl accommodating portion 93 of the first accommodating portion 60 ). Both end portions of the rod are bent toward the same direction at right angles so as to be formed in a substantially C-shape, and both end portions of the C-shape are provided on the outer surface. As shown in FIG. 6, the locking pawl 94 includes a rectangular main body 94a and an arrowhead portion 94b having a wedge-shaped cross section, and the main body 94a is successively provided on the other side of the cover portion 67 toward a direction intersecting the cover portion 67 at right angles. Of the edge portions, this arrowhead portion 94b is provided successively in the front end of the main body 94a. The engaging surface 94c facing the cover portion 67 is provided at a position where the main body 94a is successively provided in the arrow portion 94b. After the arrow portion 94b is elastically deformed and passes through the gap between the outer surface and a part (crossbar portion 93a) of the pawl accommodating portion 93 arranged in parallel with the outer surface, the locking pawl 94 is engaged in the pawl accommodating portion 93 , thus the engagement surface 94c of the arrowhead portion 94b recovering from the elastic deformation comes into contact with the crossbar portion 93a. In other words, the cover portion 67 and the other side wall portion 66 of the second accommodating portion 64 are engaged with each other through the pawl accommodating portion 93 and the locking pawl 94 . Furthermore, in FIG. 6 , a gap is provided between the engaging surface 94 c and the lateral bar portion 93 a for the purpose of simplifying the description, but actually the engaging surface 94 c and the side bar portion 93 a are in contact with each other.

A plurality of cover parts 67 are successively disposed on the corresponding second accommodating parts 64 through first hinges, and the longitudinal direction of the plurality of cover parts is arranged in a row along the X direction. Also, certain cover portions 67 are arranged such that a gap 95 through which electric wires are taken out from the second accommodating portion 64 is provided between the certain cover portion 67 and another cover portion 67 adjacent to the certain cover portion 67 . This gap 95 is also a portion of the cover portion 67 that does not cover the slot opening 98 of the second accommodation portion 64 .

The wire drawing piece 96 is formed in a substantially T-shape, and an end of a portion corresponding to the vertical bar of the T is continuously provided at the end 79 (short side) of the cover portion 67 facing the gap 95 through the second hinge 92. part) on. In other words, the rotation axis of the second hinge 92 is arranged along the arrow Y direction, so that the electric wire drawing piece 96 is rotatably arranged around the second hinge 92 as the center of rotation. The plurality of electric wires 5 taken out from the second accommodating portion 64 through the gap 95 are connected (in other words, fixed) to the electric wire drawing piece 96 by the belt 97 as a restraint. Thus, the electric wire drawing piece 96 supports the plurality of electric wires 5 in a predetermined direction.

A plurality of plates 6 are arranged in a row along the arrow X direction, and the plates 6 are connected to each other by connecting portions not shown in the drawings. Furthermore, the rows comprising a plurality of plates 6 are connected to each other in two columns with gaps in the arrow Y direction. In other words, as shown in FIG. The Y directions are sequentially arranged parallel to each other with gaps in between. Also, a plurality of plates 6 connected to each other with an overall planar shape having substantially the same rectangular shape as that of the upper surface 2a on which the electrodes 22 and 23 of the battery assembly 2 are provided are superimposed on the upper surface 2a.

Next, an assembly method of the busbar module 1 described above will be described with reference to FIGS. 4 and 5 .

First, as shown in FIG. 4, the bus bar 3 and the terminal 4 previously connected to the electric wire 5 are sequentially accommodated in the first accommodation portion 60 of the board 6, and the electric wire 5 connected to the terminal 4 is accommodated in the second accommodation portion 64. middle. In this way, as shown in FIG. 5, after the first hinge 91 is bent so that each cover portion 67 rotates around the first hinge 91 as the center of rotation, each cover portion 67 covers the second accommodating portion 64 so as to seal the first hinge portion 67. The groove opening 98 of the two receiving parts 64 engages the pawl receiving part 93 and the locking pawl 94 with each other. Thus, some electric wires 5 are taken out from the gap 95 provided between the cover portion 67 and another cover portion 67 adjacent to the cover portion 67, and then the electric wires 5 are fixed to the gap 95 disposed on the cover portion 67 by using a band 97. Wire extraction tab 96 in end 79 . Therefore, the wire extraction piece 96 is rotated around the second hinge 92 as the center of rotation from the position in FIG. The electric wire 5 advances along the arrow X direction. As described above, the busbar module 1 is assembled.

Next, description will be made regarding the operation of the present invention in the busbar module 1 described above with reference to FIG. 6 .

In the busbar module 1 , the second receptacle 64 is sealed at the slot opening 98 by a cover 67 which is arranged continuously via the first hinge 91 . At this time, the first hinge 91 is in a bent state, and the locking pawl 94 is engaged in the pawl accommodating portion 93 . Thus, in this state, the bent first hinge 91 returns to the original shape, so that a rotational force F1 (in other words, a force to turn the lid portion 67 upward around the first hinge 91 as the center of rotation) is generated, which The rotational force F1 rotates the cover portion 67 in the width direction from the center position P of the first hinge 91 with respect to the cover portion 67 in the drawing around the first hinge 91 as the center of rotation counterclockwise. However, the locking pawl 94 provided to face the first hinge 91 in the width direction is engaged with the pawl accommodating portion 93 so that the other side edge portion facing the center position P of the first hinge in the width direction does not float.

As described above, according to the embodiment of the present invention, in the board 6, the center position P of the first hinge 91 that will continuously contact the lid portion 67 in one side wall portion 66 of the second accommodating portion 64 and make the lid portion 67 and The direction in which the center position Q of the locking pawl 94 to which the other side wall portion 66 of the second accommodating portion 64 engages is aligned is set parallel to the width direction of the second accommodating portion 64 . Thus, under the state where the lid portion 67 covers the second accommodating portion 64, even when the bent first hinge 91 is about to return to the original shape (that is, the state where the lid portion is opened) so that the lid portion 67 is moved from the second When the center position P of a hinge 91 turns upward in the width direction around the first hinge 91 as the center of rotation, the other side edge of the cover portion 67 facing the center position P of the first hinge 91 in the width direction The portion is also engaged in the other side wall portion 66 by a locking pawl 94 and a pawl receiving portion 93 . Thus, it is possible to prevent a part of the lid portion 67 from floating due to the twisting of the lid portion, and to prevent the lid portion 67 from being opened.

In addition, the above-described embodiments are merely representative embodiments, and the present invention is not limited to these embodiments. In other words, several modifications can be made to these embodiments without substantially departing from the essence of the present invention.

Claims (4)

1. A wiring body, comprising: a box-shaped wiring groove portion having a bottom wall portion and two side wall portions and in which electric wires are accommodated; a cover portion that is rotatably connected to one side wall portion of the wiring groove portion through a hinge and covers the wiring groove portion so as to seal a slot opening of the wiring groove portion; and an engaging portion such that when the cover portion covers the wiring groove portion, the cover portion is engaged with the other side wall portion of the wiring groove portion, Wherein, the wiring body is arranged such that: the center position of the hinge is aligned with the center position of the joint part, and the alignment direction is parallel to the width direction of the wiring body. 2. A bus module, comprising: a plurality of bus bars connecting the batteries of a battery assembly having a plurality of batteries; a plurality of wires connected to each battery through the plurality of bus bars; and A wiring body as defined in claim 1, which accommodates said plurality of electric wires. 3. A power supply device, comprising: a battery assembly having a plurality of batteries; and A busbar module as defined in claim 2, which is connected to the battery assembly in a stacked manner and connects said batteries to each other. 4. The wiring body according to claim 1, wherein the engagement portion includes a detent accommodating portion provided in an outer surface of the other side wall portion of the wiring groove portion, and a detent receiving portion provided in the wiring groove portion. A locking pawl in an edge portion of the cover and engaged with the pawl receiving portion.